<template>
  <view class="cart">
    <!-- 1 列表 -->
    <view class="cart-list">
      <view
        class="cart-item"
        v-for="(item, index) in goodsCart"
        :key="item.goods_id"
      >
        <!-- 1 复选框 -->
        <view class="goods-chk">
          <u-checkbox
            :value="item.checked"
            shape="circle"
            active-color="red"
            @change="simChange(index)"
          ></u-checkbox>
        </view>
        <!-- 2 图片 -->
        <view class="goods-img">
          <u-image
            width="191rpx"
            height="191rpx"
            :src="item.goods_small_logo"
          ></u-image>
        </view>
        <!-- 3 信息 -->
        <view class="goods-info">
          <!-- 名称 -->
          <view class="goods-name u-line-2">{{ item.goods_name }}</view>
          <!-- 价格和数量 -->
          <view class="goods-price-num">
            <view class="goods-price">￥{{ item.goods_price }}</view>
            <view class="goods-num-tool">
              <view class="num-btn" @click="handleNumber(-1, index)">-</view>
              <view class="goods-vnum">{{ item.nums }}</view>
              <view class="num-btn" @click="handleNumber(1, index)">+</view>
            </view>
          </view>
        </view>
      </view>
    </view>
    <!-- 2 统计 -->
    <view class="statistics">
      <view class="all-chk">
        <u-checkbox
          :value="allChecked"
          shape="circle"
          active-color="red"
          @change="handleAllChk"
          >全选</u-checkbox
        >
      </view>
      <view class="all-price">
        合计: <text>￥{{ CartAllPrice }}</text>
      </view>
      <view class="all-count">
        <u-button @click="handleTopay" type="error" shape="circle"
          >去结算({{ CartNum }})</u-button
        >
      </view>
    </view>
  </view>
</template>

<script>
import { mapGetters, mapMutations, mapState } from "vuex";
export default {
  data() {
    return {};
  },
  computed: {
    ...mapState({
      goodsCart: (state) => state.cart.goodsCart,
    }),
    ...mapGetters("cart", ["CartNum", "CartAllPrice"]),
    // 全选的checked
    allChecked() {
      return (
        this.goodsCart.length && this.goodsCart.every((item) => item.checked)
      );
    },
  },
  methods: {
    ...mapMutations([
      "cart/cartGoodsChecked",
      "cart/cartGoodsNumberUpdate",
      "cart/cartGoodsRemove",
      "cart/cartGoodsAllChecked",
    ]),
    // 商品选中状态
    simChange(index) {
      this["cart/cartGoodsChecked"]({ index });
    },
    // 修改商品数量
    async handleNumber(unit, index) {
      if (this.goodsCart[index].nums === 1 && unit === -1) {
        // 最后一件 就执行删除
        console.log("就执行删除");
        const [err, res] = await uni.showModal({
          title: "提示",
          content: "您确定要删除吗",
          showCancel: true,
          cancelText: "取消",
          cancelColor: "#000000",
          confirmText: "确定",
          confirmColor: "#3CC51F",
        });
        if (res.confirm) {
          // 确认删除
          this["cart/cartGoodsRemove"]({ index });
        }
      } else {
        // 数据的处理 增加或减少
        console.log("数据的处理");
        this["cart/cartGoodsNumberUpdate"]({ unit, index });
      }
    },
    // 全选商品
    handleAllChk() {
      console.log("123");
      const checked = !this.allChecked;
      this["cart/cartGoodsAllChecked"]({ checked });
    },
    // 跳转结算页面
    handleTopay() {
      if (this.CartNum === 0) {
        // 没有选中商品 提示
        uni.showToast({ title: "没有选中商品", icon: "none" });
      } else {
        // 跳转
        uni.navigateTo({ url: "/pages/pay/pay" });
      }
    },
  },
};
</script>

<style lang="scss">
.cart {
  padding-bottom: 111rpx;
  .cart-list {
    .cart-item {
      display: flex;
      padding: 10rpx;
      border-bottom: 1rpx solid #ccc;
      .goods-chk {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
      }

      .goods-img {
        flex: 2;

        display: flex;
        align-items: center;
        justify-content: center;
      }

      .goods-info {
        color: #666;
        flex: 3;
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        .goods-name {
        }

        .goods-price-num {
          display: flex;
          justify-content: space-between;
          .goods-price {
            color: $themeColor;
          }

          .goods-num-tool {
            width: 140rpx;
            height: 40rpx;

            display: flex;
            justify-content: space-between;
            .num-btn {
              border: 1rpx solid #ccc;
              border-radius: 50%;
              width: 40rpx;
              height: 40rpx;
              text-align: center;
              line-height: 40rpx;
            }

            .goods-vnum {
            }
          }
        }
      }
    }
  }
  .statistics {
    position: fixed;
    background-color: #fff;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    border-top: 1rpx solid #ccc;
    display: flex;
    align-items: center;
    padding: 15rpx;
    .all-chk {
    }

    .all-price {
      flex: 1;
      color: #666;
      text {
      }
    }

    .all-count {
    }
  }
}
</style>